Opthalmic mounting.



K. PARSONS.

OPHTHALMIC MOUNTING.

'APPLICATION FILED OCT. 30, 1916.

1,218,1 12-. v Patented Mar. 6-, 1917.

IIVVENTOR lvA/POZD h. PARSOMS Arromvm HAROLD K. reasons, or SOUTI-ILBBID'GE, MAssAcHUsET'rs.

OPHTHAL IC MOUNTING.

Specification of Letters Patent.

Patented Mar. 6, 1917.

Application filed October so, 1916. Serial no. 128,47.

To all whom it may concern:

Be it known that I, HAROLD K. PARsoNs,

a citizen of the United States, residing at- Southbridge, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Ophthalmic Mountings, of which the following is a specification.

This invention relates to improvements in ophthalmic mountings,- and has particular reference to that form of mounting in which the lenses are rigidly supported, and in which means are carried by the lens supports for securely retaining the mounting in position on the nose of the wearer.

One of the leading objects of the present invention is the provision of novel and improved means adapted to automatically 'fit themselves to the irregulations of the contour of the nose of the wearer, and to mostsatisfactorily retain the mounting in position thereon.

A further object of the invention is the provision of an improved type of guard or retaining device for an ophthalmic mounting, which shall be composed of several independent parts each so supported as to automatically adapt and fit itself to the nose independent of the other parts of the guard or retaining device.

A further object of the invention is the provision of an improved manner of mounting the said automatically adjusting parts to facilitate both their construction and their automatic fitting to the nose of the wearer.

Other objects and advantages of my improved constructionshould be readily apparent by reference to the following specification taken in connection with the accom mounting embodying my'improvement.

Flg. II represents a sectional vlew as on the line IIII of Fig. I. s

Fig. III represents a detail rear view of one of the guards and arms removed.

Fig. IV represents a sectional view as on the line IVIV of Fig. III. I v

Fig. V represents an enlarged slightly perspective view of my improved fulcrum member.

Fig. VI represents a perspective view of a slightly modified construction.

Fig. VII represents 'a'plan view of the arm blank for Fig. VI.

Fig. VIII represents a view-partially in section of another modification of my invention.

Fig. IX represents a plan View of the parts in normal relation.

Fig. X represents a similar view illustrating the parts as applied to the'nose.

In the drawings, in' which similar characters of reference are employed to denote corresponding parts throughout the several views, the numeral 1 designates the bridge of an ophthalmic mounting, which serves to connect the pair of lenses 2 and retain the lenses in rigid relation.

I have shown my improved retaining members as associated with a bridge of this character since this type of bridge'has been found in actual use to be the most satisfactor but it will be understood that my gripping member is not dependent upon this particular bridge but may be used with spring bridges or any other type as desired.

- Referring to that form of construction illustrated in Figs. II and III, I have shown a single guard arm comprising a' handle portion 3 having a flat or horizontally disposed pivot engaging portion 4 beyond which it is bent into the L shaped portion 5 having the material disposed substantially in a vertical plane and provided with the swelled 9r enlarged parts 6 and 7, each having an elongated or non-circular aperture 8 formed therein, while fitting in the apertures 8 are the pins 9 and 10 respectively on the guard or nose, engaging members 11 and 12. The nose engaging member 12, it is to be noted, is preferably shorter than the member 11,

and disposed largel-y or entirely above thearm 5, while the member 11 is a longer guard or bearing member extending partially aboveand partially below thearm 5. It is one of the purposes'of my present in vention to render both the members 11 and 12 automatically adjustable to fit and substantially engage the nose both longitudinally and transversely thereof. In the accomplishment of this result I preferably draw straight up from the said guard members the securing rivets 9 or 10, as the case may be, which are of lessmajor and minor diameters than the corresponding diameters of the aperture 8, to permit of a loose or wabbly movement of the pin in said apertures, while I mount on the pins or rivet members my improved fulcrums 13, which are in the form of disks having central apertures 14 corresponding substantially to the shape of the guard retaining rivets or pins and are thick at the center and rounded to a sharp edge at their circumference,thus providing satisfactory rounding fulcrum members on which the guards may rock on the one side and the guard arm on the other side in all directions, thus supporting the guards for most satisfactory wabbling or rocking movement to readily and accurately conform to the shape of the nose, as should be best understood by reference to Fig. IV.

Referring to the form of the invention illustrated in Figs. VI and VII, it is to be noted that in place of the single guard arm 5 serving as a sup-port for the guards 11 and i 12, I preferably split the arm 5 into the portions 15 and 16, the arm 16 being slightly longer than the arm 15, and both of said arms being adapted to be reversely bent or looped, as indicated in Fig. VI, the arm 15 bearing the guard 11, and the arm 16 bearing the guard 12, which on account of the difference in length of the two arms will dispose the guard 12 inwardly of the guard 11, the method of attachment of the guards in both instances being the same, so that the respective blades will automatically fit the nose, with the difference that the form shown in Figs. VI and VII permits of better initial adjustment of the parts than can be readily accomplished with the form illustrated in Fig. III.

In Figs. VIII, IX and X, I have illustrated a further embodiment of my invention, in which I employ the guard supporting pivot 17 having pivotally mounted thereon the fingerpiece lever 18, similar to the lever or guard arm just described, having the vertically disposed portion 5 provided with a terminal loop and bearing the guard member 11. Encircling the post 17 is an actuating spring 19 for the lever 18, suitably interlocking therewith as by fitting'into an aperture therein, as indicated in Fig. VIII or any other desired manner.

Retaining the lever against vertical move-' menton the pivot, and inclosing the spring is a sleeve 20 hearing at one end against the lever 18 and at the other against the widened or enlarged head 21 of the pivot 17 while rotatably mounted on the sleeve 20 and resting against the upper face of the lever 18 is a second'guard arm or lever 22 actuated by a spring 23, encircling the sleeve above the lever 22 and held down by the head 21 of the pivot.

It will be noted particularly by reference to Fig. VIII that the fingerpiece lever 18 is provided with the handle 2-1, while the lever 22 has no handle, but on the other hand its inwardly extending portion rests against the vertical portion 5 of the lever 18, as most clearly illustrated in Fig. IX, its inward movement being thus limited by the portion 5, although being capable of outward movement independent of the lever 18 and its portion 5.

The purpose of this construction will be best understood by comparison of Figs. IX and X, from which it will be seen that when it is desired to place the mounting in position on the face it is merely necessary to press against the handle 24( to swing the lever 18 into opening position, when at the same time the contact with the portion 5 and the lever 22 will swing the lever 22 backward, as indicated in Fig. IX. The mounting may then be readily placed on the face, when the handles 24; will be released and the lever swung inward under actuation of their respective springs 19 and 23, until their. inward movement is limited by the engagement of the guards 11 and 12 with the nose, as shown in Fig. X. It is to be noted, however, that the arm 22 is so adjusted that the guard 12 is normally disposed an appreciable amount inwardly of the guard 11 so that when the parts are placed in engagement with the nose the engagement of the guard 12 with the nose will be such as to hold its arm 22 away from the portion 5 of the arm 18, the pad 12- consequently being held against the nose through tension of its spring 23 and the guard 11 through tension of its spring 19, the two being entirely independent one from the other, so far as their engagement with the nose is concerned, although both being controlled and shifted out of engagement with the nose through movement of the single controlling handle or fingerpiece 2 1-, as in the forms of my guard previously described, both being capable of automatic adjustment to exactly engage and fit the nose, one of the essential advantages in the present construction over the form shown in Figs. III or VI for example being that the present construction. is entirely automatic in its operation in that no bending of the arms to fit the guards to the nose and relatively adjust them is required, in that the separate arms take care of this adjustment, While the blades automatically rock around on and adapt themselves to the nose as in the other forms;

From the foregoing description, the construction and advantages of my improved guard or securing means for an ophthalmic mounting should be readily apparent, and it will be seen that I have provided an improved construction of retaining member embodying a pair of guards for engagement with each side of the nose, said pair comprising an inner gripping member and an outer and longer bearing member, each of said members being mounted for vertical and lateral swinging or rocking movement to most satisfactorily fit themselves to and securely yet comfortably engage the nose of the wearer, which guards are preferably supported on an improved fulcrum to facilitate this rocking movement, and which guards may if desired be mounted for adjustment relative to each other, so that both will engage with a substantially uniform pressure or with the desired relative variation in pressure, or which, if preferred, may be independently supported to automatically take care of the pressure feature. I claim:

l. A retaining device for an ophthalmic for rocking movement relative to their supports.

2. The combination with an'ophthalmic mounting, of a retaining device disposed at each side thereof, comprising supporting means, an elongated guard member fulcrumed for longitudinal rocking movement over the supporting means, and an inner shorter guard member mounted for longitudinal rocking movement over the supporting means.

3. In an ophthalmic mounting, the combination with the lens connections, of means for retaining the mounting in position, including supporting means carried by the lens connections at each side, an outer elongated guard member fulcrumed for longitudinal and transverse rocking movement over the supporting means at each side, and an additional inner guard member fulcrumed over the supporting means for universal rocking movement relative thereto.

4. In an ophthalmic mounting, the combination with a perforated supporting arm, of a guard member having a pin loosely received in the perforation of the arm, and a fulcrum washer on the pin intermediate the guard and arm to facilitate rocking movement of the guard over the arm.

a 5. A guard. arm for an ophthalmic mounting, including a supporting arm having a non-circular perforation formed therein, a guard member having a non-circular pin loosely fitting within the aperture in the Copies of this patent may be obtained for guard arm and headed to prevent withdrawal from the aperture and a fulcrum washer interposed on the pin between the guard and arm and having opposite faces bearing respectively against the guard and the arm to hold the parts in spaced relation and facilitate relative rocking move ment thereof.

6. In an ophthalmic mounting, the combination with a guard arm having a perforation formed therein, and a guard having a pin adapted to be loosely received in the perforation, of a fulcrum member for interposition between the guard and arm, said fulcrum member comprising a washer fitting on the pin and having a thick peripheral portion at one edge and a thin peripheral portion at the other edge to provide a projecting surface or fulcrum on which the guard may rock:

7. The combination with an ophthalmic mounting, of guard supporting arms pivotally secured thereto and extending rearwardly therefrom, a pair of vertically and laterally rocking guards loosely secured to the supporting arms at each side of the mounting, both of said guards having their upper ends projecting above the supporting arms, means for resiliently forcing the guards into operative position, and a single controlling means for shifting the guards at,

each end of the mounting into inoperative position.

8. In an ophthalmic mounting, nose engaging means, comprising an inner and an outer nose bearing guard, each of said guards having a rivet projecting outwardly therefrom, and means loosely engaging the rivets for retaining the guards in position relative to the mounting while permitting of their universal rocking movement.

9. In an ophthalmic mounting, nose engaging means, comprising an inner and an outer nose bearing guard, each of said guards having a rivet projecting outwardly therefrom, means loosely engaging the rivets for retaining the guards in position relative to the mounting while permitting of their universal rocking movement, and a single actuating means for shifting the pair of guards into inoperative position.

, In testimony whereof I afiiX my signature in the presence of two witnesses.

HAROLD K. PARSONS. Witnesses:

EDITH M. HALVORSEN, Josnrrr J. DEMERS.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

